"Due Date" is part of the introduction & does not have a title page. It is presented as '[INTRODUCTION] Let me tell you a story. [STORY] This has been the story "Date Due." People who do not read introductions missed it.'
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| December 1992 |
|
Castle of Days | Tor | Omnibus | 14 |
| April 1995 |
|
Castle of Days | Orb | Omnibus | 14 |